Question 3 "An electrical firm produces light bulbs that have a length life that is approximately normally distributed with a mea 780 hours and a population standard deviation of 20 hour A new version of light bulbs is being produced and is assumed to be better than the previous version. To test th claim, a random sample of 69 new light bulbs are tested. Would you agree with this claim if the random sample showed an average of 900 hours? Use a 0.01 level of significance. What are the given? Write only the number. : a. population mean: hours b. population standard deviation: hours C. sample size:
Question 3 "An electrical firm produces light bulbs that have a length life that is approximately normally distributed with a mea 780 hours and a population standard deviation of 20 hour A new version of light bulbs is being produced and is assumed to be better than the previous version. To test th claim, a random sample of 69 new light bulbs are tested. Would you agree with this claim if the random sample showed an average of 900 hours? Use a 0.01 level of significance. What are the given? Write only the number. : a. population mean: hours b. population standard deviation: hours C. sample size:
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Answer letter a,b,c,d,e,f, and g pls. I don't want to waste my money here.
Transcribed Image Text:Question 3
"An electrical firm produces light bulbs that have a length of
life that is approximately normally distributed with a mean of
780 hours and a population standard deviation of 20 hours.
A new version of light bulbs is being produced and is
assumed to be better than the previous version. To test this
claim, a random sample of 69 new light bulbs are tested.
Would you agree with this claim if the random sample
showed an average of 900 hours? Use a 0.01 level of
significance.
What are the given? Write only the number. :
a. population mean: hours
b. population standard deviation: hours
C. sample size:
d. sample mean: hours
e. level of significance:
f. What is the critical value?
Z:
g. What is the value of the calculated z? Round your answer
to the nearest hundredths.
Z:
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